<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!-- 练习
针对如下HTML结构： -->

<!-- HTML结构 -->

<div class="test-selector">
    <ul class="test-lang">
        <li class="liang">JavaScript</li>
        <li class="lang-python">Python</li>
        <li class="lang-lua">Lua</li>
    </ul>
    <ol class="test-lang">
        <li class="lang-swift">Swift</li>
        <li class="lang-java">Java</li>
        <li class="lang-c">C</li>
    </ol>
    <script src="./jquery-3.6.0.min.js"></script>
    <script src="./jQuery操作.js"></script>
</div>
</body>
</html>